cellular respiration

If cellular respiration took place in just one step all of the energy from glucose will be released and most of it will be lost so the cell needs to find a way to trap this energy by using it to make ATP

felling hungry is a sign that the body is lacking energy

Food provides the chemical energy the body need to grow and reproduce

Food molecule contains chemical energy that is released by the breaking down of chemical bonds in the food molecule

energy stored in food is expressed in units of calories (C)

a calorie is the energy needed to raise 1 gram of water 1 degree Celsius

cellular respiration is the process that releases energy from food in the presence of oxygen